Old vs new operations: three of these options are open abdominal metroplasties and only one is the modern endoscopic procedure.
Tompkins, Jones, and Strassmann metroplasty all require a laparotomy and incision into the uterine body. They leave a uterine scar, so any future pregnancy mandates an elective cesarean, and they carry more adhesions and morbidity. All three are out as 'best' options.
Transcervical hysteroscopic resection of the septum is done from inside the cavity, leaves no myometrial scar, allows later vaginal delivery, has an 80 to 89 percent success rate, a short stay, and low complication rates. It is today's procedure of choice.
Decision rule: for a septate uterus, cut the septum from within (hysteroscopy), do not open the uterus from outside. Answer is option d.